This is, according to Deadspin, the only known surviving footage of the 1919 World Series that was thrown by the White Sox (Black Sox). This footage was "part of a cache of newsreels from the Canadian Yukon that were at one point used to fill in a swimming pool that was being converted into a hockey rink. The newsreels were discovered in 1978, and sat in an archive until this year, when a White Sox fan working on a documentary about the lost films stumbled on them. Good luck for him, and better luck for us." (via)